CN205151887U - Fixed bed semi -fluid bological aerated filter sewage treatment system - Google Patents
Fixed bed semi -fluid bological aerated filter sewage treatment system Download PDFInfo
- Publication number
- CN205151887U CN205151887U CN201520979614.9U CN201520979614U CN205151887U CN 205151887 U CN205151887 U CN 205151887U CN 201520979614 U CN201520979614 U CN 201520979614U CN 205151887 U CN205151887 U CN 205151887U
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- CN
- China
- Prior art keywords
- fixed bed
- area
- water
- packing
- flushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model relates to a fixed bed semi -fluid bological aerated filter system, pack including the fixed bed and distinguish, the fixed bed packs with distinguishing and sets gradually aeration systems from bottom to top, recoil system and fixed bed, the fixed bed divide into a plurality of packing layers through bearing structure, the filler rate of loading of top layer packing layer is 100%, the filler rate of loading of all the other layer packing layers is not less than 70%, this filling quantity makes the top layer packing layer be fluidization state, overall constitution semi -fluid state for nos fluidization or few fluidization state, all the other layer packing layers. The operation of this bological aerated filter system when having guaranteed the treatment effect, has reduced the incidence that the filter material stopped up for the semi -fluid state.
Description
Technical field
The utility model belongs to sewage treatment area, is specifically related to a kind of fixed bed half fluidisation aerating biological filter sewage processing system.
Background technology
BAF (BAF) sewage treatment process belongs to the category of biomembrance process, BAF is collection bio-oxidation and the novel process retaining suspended solids one, which save post precipitation pond (second pond), there is volumetric loading, hydraulic load is large, hydraulic detention time is short, required initial cost is few, effluent quality is good: operation energy consumption is low, the feature that working cost is few, be widely used in town sewage and can be biochemical the second-stage treatment of the industry such as trade effluent and tertiary treatment in.The principle of work of BAF is that sewage passes through filter material layer, the pollutent that water body contains is retained by filter material layer, and transformed by the biological degradation that filtrate adheres to, simultaneously, organism and the predetermined substance of dissolved state are also removed, the mud produced is retained in filtering layer, and only allows the water of purification pass through, and can reach biological treatment completely like this and need not arrange second pond in downstream and carry out sludge settling in a closed reactor.
Existing BAF system mainly can be divided into two large classes by packing medium, and a class is the composite inorganic hard filtrate adopting nature haydite or artificial sintering, and another kind of is adopt the soft filtrate of organic polymer.
Adopt the composite inorganic hard filtrate of nature haydite or artificial sintering, the particle diameter of filtrate is generally 5 ~ 20 ㎜.Aeration tube, backwash pipe are arranged on bottom at the bottom of pond, and filter plate is placed in pipe network top, belong to the BAF of fixed bed without fluidized forms.The BAF of this fixed bed hard filtrate is owing to arranging filter plate, but after long-play, filter plate very easily blocks, and therefore must carry out combined water and air backwash, power consumption is large; Hard filter material replacement difficulty, cost of labor is high.
Adopt the soft filtrate of organic polymer, filtrate mostly is light filter material, does not generally arrange filter plate, but is filtrate supporting layer, and filtrate is placed on supporting layer, belongs to the BAF of suspension bed fluidized forms.The BAF of this suspension bed light filter material due to system operationally filtrate be in full fluidized state, suspended substance and the microbial film come off easily penetrate filter material layer, thus affect effluent index, cause thrashing.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of fixed bed half fluidisation aerating biological filter sewage processing system, it can significantly improve the advanced treatment effect of sewage, special raising COD(chemical oxygen demand (COD)) and SS(solid particulate matter) clearance, and energy predigested running mode, reduce system energy consumption, save manual maintenance cost.
For achieving the above object, the utility model provides following technical scheme:
A kind of fixed bed half fluidisation BAF system, comprise fixed bed packing area, described fixed bed packing area sets gradually aerating system from bottom to top, back-purge system and fixed bed, described fixed bed is divided into some packing layers by supporting structure, and the filler filling rate of top layer packing layer is 100%, the filler filling rate of remainder layer packing layer is not less than 70%, this loadings makes top layer packing layer be that remainder layer packing layer is fluidized state without fluidisation or few fluidized state, overall formation half fluidized state.
As preferably, the filler in described packing layer is the organic soft-filler of polymer, its specific surface area>=10000m
2/ m
3.
As preferably, the filler wet density of top layer packing layer is 1.0-1.2g/cm
3, the filler wet density 0.9-1.0g/cm of remainder layer packing layer
3.
A kind of fixed bed half fluidisation BAF system of the present invention, also comprises former water water distribution area, the first water hole district, back-flushing catchment area, the second water hole district, back-flushing drained zone, water inlet water distribution area and water outlet catchment area.
As preferably, the bottom of described former water water distribution area communicates with the first water hole district, first water hole district communicates with fixing packing area again, fixing top, packing area communicates with the second water hole district, second water hole district communicates with water inlet water distribution area, between fixed bed packing area and the second water hole district, back-flushing catchment area is set, second water hole district communicates with water outlet catchment area, back-flushing catchment area communicates with back-flushing drained zone, and described fixing packing area, the second water hole district, water inlet water distribution area and back-flushing catchment area are a distribution unit.
As preferably, comprise and be not less than 2 distribution units.
As preferably, described former water water distribution area is provided with sewer line, and aerating system and back-purge system are provided with air line, and back-flushing catchment area and back-flushing drained zone are provided with drainage pipeline, and water outlet catchment area is provided with outlet conduit.
Principle of work of the present invention illustrates: this fixed bed half fluidisation aerating biological filter sewage processing system is that intermittent periods it is run, from water inlet, aeration completes to back flushing is complete cycle of operation.
Former water is through the former water water distribution area regulating water quality water yield, fixed bed packing area is entered by water hole district, flow through this fixed bed packing area from bottom to top, under the mixing effect of air water, filler is without fluidisation or few fluidisation at top layer, fluidisation between lower floor to bottom, form half fluidisation generally, give full play to the secondary filter effect without fluidized packing material layer, improve water outlet SS effect, the filler of fluidized state then fully ensure that microbial growth environment simultaneously, ensure that the removal effect of other pollutents.
Sewage enters water outlet catchment area after 1 grade or multistage fixed bed packing area distribution unit process, uniform effluent or enter subsequent disposal facility.After running for some time, former water is stopped to intake, keep liquid level between water hole district and back-flushing catchment area, open back-purge system, Air Reverse flushing is carried out to fixed bed packing area, after having recoiled, opens the water inlet of former water, back-flushing catchment area is discharged out-of-bounds after collecting recoil water outlet to back-flushing drained zone, enters next cycle of operation after recoil flow process completes.
Beneficial effect of the present invention is embodied in: by the restriction of fixed bed packing layer and the distribution in region, back flushing process only needs air recoil, combining recoil and clear water backwash, shortening the backwash time without the need to carrying out air water, simplify backwash flow process, save power and resources costs; And operate to half fluidized state, while ensure that treatment effect, reduce the incidence of filter clogging.
Accompanying drawing explanation
Fig. 1 is the structural representation of fixed bed packing area in fixed bed half fluidisation BAF system of the present utility model;
Fig. 2 is the structural representation of fixed bed half fluidisation BAF system of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described.
Embodiment 1
Fixed bed packing area 1 in fixed bed half fluidisation BAF system as described in Figure 1, described fixed bed packing area sets gradually aerating system 11 from bottom to top, back-purge system 12 and fixed bed 13, described fixed bed is divided into some packing layers by supporting structure, the filler filling rate of top layer packing layer 131 is 100%, the filler filling rate of remainder layer packing layer 132 is not less than 70%, this loadings makes top layer packing layer be without fluidisation or few fluidized state, remainder layer packing layer is fluidized state, overall formation half fluidized state.
Filler in described packing layer is the organic soft-filler of polymer, its specific surface area>=10000m
2/ m
3.
The filler wet density of top layer packing layer is 1.0-1.2g/cm
3, the filler wet density 0.9-1.0g/cm of remainder layer packing layer
3.
Fixed bed half fluidisation BAF system as shown in Figure 2, comprise fixed bed packing area 1 as shown in Figure 1, also comprise former water water distribution area 2, first water hole district 3, back-flushing catchment area 4, second pool 5, back-flushing drained zone 6, water inlet water distribution area 7 and water outlet catchment area 8 excessively.
The bottom of described former water water distribution area 2 communicates with the first water hole district 3, first water hole district 3 communicates with fixing packing area 1 again, fixing top, packing area 1 communicates with the second water hole district 5, second water hole district 5 communicates with water inlet water distribution area 7, between fixed bed packing area and the second water hole district, back-flushing catchment area 4 is set, second water hole district 5 communicates with water outlet catchment area 8, back-flushing catchment area 4 communicates with back-flushing drained zone 6, described fixing packing area, second water hole district, water inlet water distribution area and back-flushing catchment area are a distribution unit, one total comprises 3 distribution units.
Described former water water distribution area is provided with sewer line 20, and aerating system and back-purge system are provided with air line 30, and back-flushing catchment area and back-flushing drained zone are provided with drainage pipeline 40, and water outlet catchment area is provided with outlet conduit 50.
Above embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that the common engineering technical personnel in this area make the technical solution of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.
Claims (7)
1. a fixed bed half fluidisation BAF system, comprise fixed bed packing area, it is characterized in that described fixed bed packing area sets gradually aerating system from bottom to top, back-purge system and fixed bed, described fixed bed is divided into some packing layers by supporting structure, the filler filling rate of top layer packing layer is 100%, and the filler filling rate of remainder layer packing layer is not less than 70%
.
2. a kind of fixed bed half fluidisation BAF system according to claim 1, is characterized in that the filler in described packing layer is the organic soft-filler of polymer, its specific surface area>=10000m
2/ m
3.
3. a kind of fixed bed half fluidisation BAF system according to claim 1, is characterized in that the filler wet density of top layer packing layer is 1.0-1.2g/cm
3, the filler wet density 0.9-1.0g/cm of remainder layer packing layer
3.
4., according to the arbitrary described a kind of fixed bed half fluidisation BAF system of claims 1 to 3, characterized by further comprising former water water distribution area, the first water hole district, back-flushing catchment area, second pool, back-flushing drained zone, water inlet water distribution area and water outlet catchment area excessively.
5. a kind of fixed bed half fluidisation BAF system according to claim 4, it is characterized in that the bottom of described former water water distribution area communicates with the first water hole district, first water hole district communicates with fixing packing area again, fixing top, packing area communicates with the second water hole district, second water hole district communicates with water inlet water distribution area, between fixed bed packing area and the second water hole district, back-flushing catchment area is set, second water hole district communicates with water outlet catchment area, back-flushing catchment area communicates with back-flushing drained zone, described fixing packing area, second water hole district, water inlet water distribution area and back-flushing catchment area are a distribution unit.
6. a kind of fixed bed half fluidisation BAF system according to claim 5, is characterized in that comprising and is not less than 2 distribution units.
7. a kind of fixed bed half fluidisation BAF system according to claim 5, it is characterized in that described former water water distribution area is provided with sewer line, aerating system and back-purge system are provided with air line, back-flushing catchment area and back-flushing drained zone are provided with drainage pipeline, and water outlet catchment area is provided with outlet conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520979614.9U CN205151887U (en) | 2015-12-01 | 2015-12-01 | Fixed bed semi -fluid bological aerated filter sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520979614.9U CN205151887U (en) | 2015-12-01 | 2015-12-01 | Fixed bed semi -fluid bological aerated filter sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205151887U true CN205151887U (en) | 2016-04-13 |
Family
ID=55687602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520979614.9U Withdrawn - After Issue CN205151887U (en) | 2015-12-01 | 2015-12-01 | Fixed bed semi -fluid bological aerated filter sewage treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205151887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347467A (en) * | 2015-12-01 | 2016-02-24 | 浙江海牛环境科技股份有限公司 | Sewage treatment system of semi-fluidization biological aerated filter of static bed |
-
2015
- 2015-12-01 CN CN201520979614.9U patent/CN205151887U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347467A (en) * | 2015-12-01 | 2016-02-24 | 浙江海牛环境科技股份有限公司 | Sewage treatment system of semi-fluidization biological aerated filter of static bed |
| CN105347467B (en) * | 2015-12-01 | 2018-05-25 | 浙江海牛环境科技股份有限公司 | A kind of fixed bed partly fluidizes aerating biological filter sewage processing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160413 Effective date of abandoning: 20180525 |
|
| AV01 | Patent right actively abandoned |